Apex domains cannot have CNAME records.
Question and response
Question
dig biltstins.com. NS
Answer
biltstins.com. 5 NS ns1.biltstins.com.
biltstins.com. 5 NS ns2.biltstins.com.
Authority
The response has no authority records.
Additional
ns1.biltstins.com. 5 A 69.65.31.70
ns2.biltstins.com. 5 A 209.212.157.200
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0